This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B04-SAUD80X500S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B04-SAUD80X500S in place of this model. The SAU replacement uses the same profile body, bore, stroke, force and SC-series mounting. It moves to the current CMSG / DMSG / EMSG sensor switches (the SU used CS1-B / DS1-B) and adds the SAUF valve-integrated option.
Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X500S
The AirTAC Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X500S is a double-acting profile-type standard cylinder with a Ø80mm bore and 500mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the B04-SAUD80X500S, which matches its bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke500 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → B04-SAUD80X500S
About the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X500S
The AirTAC B04-SUD80X500S is a double-acting, double-rod profile cylinder where a rod exits both ends, yielding equal push and pull force of 2268 N at 0.5 MPa, 3175 N at 0.7 MPa, and 4082 N at 0.9 MPa. The B04- prefix marks this as AirTAC's construction-machinery dedicated variant of the SUD80X500S, mechanically identical to the base model. It features a 25 mm rod, M20x1.5 thread, 3/8" port, and 28 mm adjustable cushions. This discontinued unit is fully replaced by the drop-in SAUD80X500S.
Because both faces use the rod-side area, the double-rod design prevents rotation and lets the back rod carry a sensor cam. With a 2:1 safety margin, the vertical lift capacity is about 116 kg, and the safe working load is roughly 1361 N. The -S suffix indicates a piston magnet for legacy CS1-B/DS1-B switches; the SAUD replacement upgrades to CMSG/DMSG/EMSG sensors. Note that cushions only decelerate; an external rod lock is needed to hold loads on air loss.
Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X500S Technical Specifications
| Model | Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X500S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | B04-SAUD80X500S |
| Bore size | Ø80 mm |
| Stroke | 500 mm |
| Acting type | Double acting |
| Port size | 3/8" |
| Rod thread | M20×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 28 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The B04-SAUD80X500S carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
The B04-SAUD80X500S produces the same force from the same bore — a true drop-in on output. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X500S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×500 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SU-family variants: SUD (double rod), SUJ (adjustable stroke) — each maps to its SAU equivalent (SUD→SAUD, SUJ→SAUJ). The current SAU line adds the SAUF valve-integrated option.
Where the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X500S Is Used
Excavator Linkage
Drives dual-tool mechanisms on heavy equipment where the B04- construction prefix ensures dedicated application fit and equal both-ways force handles reversing loads.
Crusher Gate
Operates a synchronized crushing jaw on mobile machinery using the back rod for a sensor cam while maintaining equal push and pull force in harsh sites.
Loader Alignment
Positions heavy construction buckets with anti-rotation stability, leveraging the 116 kg vertical lift capacity and 3/8" port for rapid actuation.
Replacing the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X500S with the B04-SAUD80X500S
To replace this discontinued cylinder, use the SAUD80X500S, which matches the 80 mm bore, 500 mm stroke, 3/8" port, and FA/LB mounting. When sizing both ways, verify the equal force fits your load: if you need less force, step down to a 63 mm bore, or step up to 100 mm for more. A double rod is right when you need anti-rotation or must drive two tools. For the -S magnet, swap legacy CS1-B/DS1-B switches for CMSG/DMSG/EMSG sensors. At 500 mm stroke, use external guides to prevent rod bending and side loads.
Replacement checklist
- ✓ Same bore / stroke → B04-SAUD80X500S
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S): sensor family CS1-B → CMSG
- ✓ Mounting reused (FA/FB/CA/CB/LB)
- ✓ Need a built-in valve? → SAUF
Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X500S FAQ
Yes, the B04-SUD80X500S is discontinued. The exact drop-in replacement is the SAUD80X500S. The B04- prefix simply marks it as the construction-machinery dedicated variant, so the SAUD shares the exact 80 mm bore, 500 mm stroke, 3/8" port, and FA/LB mounting. You only need to upgrade the -S sensors from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG.
Because it is a double-rod cylinder, force is equal both ways: 2268 N at 0.5 MPa, 3175 N at 0.7 MPa, and 4082 N at 0.9 MPa. The safe working load is approximately 1361 N (60% of the 0.5 MPa figure), and it can vertically lift about 116 kg with a 2:1 margin. Air cushions only decelerate; use an external rod lock for load holding.
Related AirTAC SAU Cylinders
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